Credit Limit should not affected for particular customer for certain products

Here is the scenario that credit should be inactive for particular customer (A,B,C) and particular product .Say this can be related in real time by ,for certain distributors region  the product is moving slow,in order to promote the product (X,Y,Z) company decided to sell to products to customers (x,y,z) where these products should have impact over credit management.

In order to achieve this,we need not want to use User exit or different item category group.

Here we have to create item category usage.

In the customer material info record,maintain Item Usage as below

Copy standard item category tan to xtan uncheck credit credit active

In the item category determination do the below setting

By doing  so ,we can make credit inactive for particular customer for particular product,for rest of the customer and rest of the products,the process will be normal credit management.

Thanks & regards,

Pradeep